Shoe-machine



W. C. STEWART. SHOE MACHINE.

APPLICATION FILED DEC-12, I913.

Patented Aug. 22, 1916.

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w. c. STEWART. SHOE MACHINE.

APPLICATLON FILED DEC. l2 ISIS. 1,195,41 1 Patented Au .-22 1916.

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SHOE MACHINE. APPLICATION FILED DEC. 12, I913.

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WILLIAM C. STEWART, OF SWAMLPSCOTT, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SI-IOE-MACHIN E.

To all whom it may concern:

Be it known that I, WILLIAM C. STEWART, a subject of the King of England, residing at Swampscott, in the county of Essex and State of Massachusetts, have invented certain Improvements in Shoe-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for inserting fastenings and particularly to mechanism for separating and delivering fastenings for insertion into the work by driving mechanism. As illustrated herein, an embodiment of the invention is shown as applied to a lasting machine of the type disclosed in United States Letters Patent N o. 9%,291, granted January a, 1910, on application of Thomas H. Seely. The'invention is, however, applicable to tacking and nailing machines generally.

The object of the invention is to provide improved tack handling mechanism and particularly to provide means for supplying a plurality of tacks for simultaneous use.

A feature of the invention consists in the combination with a single raceway and a plurality of drivers and tack holders having tack pockets through which the drivers operate, of means operating by movement in a single direction to separate a plurality of loose tacks from the raceway, and additional means for delivering the separated tacks to the tack pockets.

A further feature of the invention consists in means for introducing the stem or body of a tack into a tack throat, and means for subsequently pushing the head of the tack completely into the tack throat.

These and other features of the invention, including certain important details of construction and combinations of parts, Will ap pear more fully from the following description when read in connection with the accompanying drawing and will be pointed out in the appended claims.

In the drawings,-Figuie 1 is an elevation of the right-hand side of a machine embodying this invention in the best form now known to me; Fig. 2 is an elevation of the left-hand side of the head of the ma- Specification of Letters Patent.

move from tack receiving .wardly directed wiping Patented Aug. 22, 1916. Serial No. 806,315.

are detailed views for supplying, separating chine; Figs. 3,4 and 5 of the mechanism and delivering the tacks.

The machine head 4 is mounted on a column 2, the base of which rests upon the floor. In the head is mounted a single cam shaft 5 which is connected by a friction clutch 6 to a continuously driven, loose pulley 8. The clutch is closed by a wedge 9 on the head of a rod which is connected to a treadle 1O fulcrumed at 12 in the base of the column 2 and a spring 14 acting against the lower end of a guide sleeve 15 depending from the head withdraws the wedge when pressure on the treadle is released.

An edge or back rest 16 is rigidly secured to the machine frame by a bolt 18 with pro vision for longitudinal adjustment to change 1 the position of the shoe with relation to the .tacker for locating the tacking line nearer to or farther from the edge of the shoe bottom. A bottom rest 20 may also be provided to serve as a support for the bottom of a shoe and is preferably in the form of a loop into which the tack block may partially enter so as to drive the tacks adjacent to the inner edge of the rest. A tack block 22 is mounted on the lower end of a lever 24 to position, Fig. 2, to upper contacting position in an arc inclined inwardly and downwardly with relation to the shoe bottom. The tack block therefore delivers a downwardly and inblow to the work. The lever 24 is fulcrumed at 26 and is actuated through a link 28 from the track in a cam block 30, the rear end of the link being sustained by a rocking support 32. The upper portion of the carrier lever 2a is provided with a slot 34 which is struck from the bearing of the opposite end of the link 28 as a center so that the forward end of the link 28 may be adjusted up and down in the slot 34 without affecting the tack receiving position of the tack block. As the link is adjusted in the slot 34:, however, the stroke of the tack block, and hence its position relative to the work will be varied. The driver bar is carried by the tack block and hence will be in proper driving relation to the tack block whatever may be the limit of its movement into tack driving position as determined by the above described adjustment The tack driver bar is jointed, the lower portion 36, Fig. 1, being guided in the tack block lever 24,, Fig. 1, while the upper section 38 is guided in the machine frame. The driver is raised by a usual driver cam that is not detailed on these drawings against a spring arm 40, Fig. 2, that turns about a stud 42, Fig. 1, and is actuated by a spring 44, the tension of which is set by a crank disk46 having ratchet teeth on its lower edge that are engaged by a locking pawl 48.

The tack supplymg mechanism is arranged to deliver two tacks successively to the tack block 22 which has two tack pockets, there being two drivers 50, whereby two tacks are driven side by side at one time.

The tacks are supplied from a hopper 52, Figs. 1 and 3, in which is journaled a lifter shaft 54, carrying means 56 for raising tacks and depositing them on the raceway 58 which has one tack channel, a clearer shaft 60, carrying devices 62 for removing misplaced tacks from the raceway channel, and a counter shaft 64 is provided from which the lifter and clearer shafts are driven at appropriate relative speeds by intermeshing gearing as shown in the drawings, the whole being driven by a pulley 66 and belt from a pulley 68 on the main shaft 5, Fig. 2. The raceway is supported on the hopper and extends through an appropriately shaped aperture in the side of the hopper. The hopper is provided with a door 70 hinged at 72, Fig. 1, and fastened by swinging bolt 74, which, when loosened, permits the door to swing downwardly for the removal of the tacks, when it is desired 1 to change the kind of tacks being used or when for any other reason it is desirable to empty the tack pot.

At the lower end of the raceway 58 tacks are delivered to the separator block 76, Figs. 3,4 and 5, in which an actuator bar 7 S is reciprocated by a horizontal lever 80, the rear end of which is engaged by a vertical lever 82 hearing a roll on its upper end which is held by a spring 84 in engagement with an edge cam 86 having an intermediate partial rise between its lower portion and the high portion with which the lever is shown in engagement in Fig. 3. The cam actuates the bar 78 on the back stroke and a spring 88 effects the forward or tack separating stroke. A separator plate 90 is connected to the lower side of the bar 78 yieldingly through a spring plunger 92, the separator being guided in the block 76 as appears most clearly from the full lines in Fig. 5 and the dotted lines in Fig. 4 and having a vertical body portion extending across the lower end of the'race Way channel, or the continuation thereof in the block 76. This vertical body portion of the separator plate has two notches or tack recesses 94, 96, the former of which stands in line with the lower end of the raceway channel as in Fig. 4 when the separator is at the right-hand end of its stroke, thus allowing a tack to seat itself in recess 94 while the separator is at rest on the high part of cam 86. l/Vhen the cam turns in the direction of the arrow to present the intermediate portion to lever 82, the springs 84 and 88 t 'ansmit movement through a spring 98 on the rod 9:2 to shift the separator 90 to the left, Fig. 4, to a point when the recess 96 is in front of the raceway channel in which position the separator remains at rest momentarily while a second tack descends into said recess. Further rotation of the cam 86 now permits movement of the separator to a position in which the recesses 94, 96 are opposite tack throats 100, in which position there is a dwell. In this position the underlying portion of the slide 90, Fig. 5, which carries the rod 92, comes against a stationary stop 102, Fig. 4, further movement of the separator being thus arrested while the slide 7 8' may continue to move by compressing the spring 98. In the rear edge of the actuator bar 78 there is a cam slot 104 which embraces a depending stud 106, Fig. 5, on a slide 108 that movable forwardly and backwardly in the block 76. In this slide there is a plunger 110 held forwardly by a spring 11:2 and having, on the front face of its head, ejecting lingers 114 that are shaped and arranged for movement through the recesses 94, 96 to force the two tacks therefrom into the tack throats 100. When the separator has completed its stroke, the spring pressed by further movement'of' the bar 7 8 and the inclined part of the cam slot 104 therein acts on the stud 106 to push the plunger 110 and fingers 114 forward to expel the tacks from the separator into the throats 100.

To insure that a tack shall pass into each of the recesses 94, 96, as the slide 90 pauses with the recesses in turn opposite the raceway, mechanism best shown in Fig. 3 is provided. On the rear wall of the raceway there is a projection 101 and a knocker or hammer 103,which cooperates with the projection, is pivoted at 105 to a bracket on the machine frame. A spring 107 is connected to the hammer and to the frame so as to hold the hammer normally against the projection 101. On one of the cams of the machine pins 109, 111 are provided which are so located that they in turn engage the end of the hammer lever 103 and lift it against the spring 107. The hammer is released by the pin 109 when the recess 94 is opposite 125 the raceway and delivers. a blow upon the projection 101, thereby jarring the raceway and insuring that a tack will pass from the raceway to the recess 94. When the recess 96 is brought opposite the raceway the 130 98 is comagainst the abutting face of the block 76,

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other pin 111 releases the hammer which delivers another blow to the raceway and the recess 96 receives a tack.

On the outer side of the slide 90 the edge of the plate 7 6 is slightly elevated and has a bevel 77 leading to the level of the slide 90. In case the leading tack in the raceway accidentally shingles wrong, that is, has the rear edge of its head over instead of under the forward edge of the head of the following tack, the forward edge of said leading tack will engage the inclined face 77 and will be straightened up so that its stem will properly enter one of the recesses 94, 96.

lVhen the face of the plunger 110 comes Fig. 5, the fingers 114 have passed through the recesses 94, 96 into position to complete the periphery of the tack throats 100 and the spring 112 thereafter yields and permits an ejecting plate 116 carried on the slide 108 to be further actuated by the slot 104 in the bar 7 8 against the heads of the tacks to push them into the tack throat 100 through which they pass to the tack block 24.

The protective cover 120, Fig. 3, for the separating devices is hinged above them on a rod 122 which has a knurled head by which it may be pulledlongitudinally against the spring 124 and turned up and down to raise and lower the cover 120. A spring 126 engagesa shoulder on the cover to hold it down. To turn the cover up the knurled head is pulled to the right against the spring 124 until the spring 126 is disengaged from the shoulder on the cover when it may be turned up by rotation of the knurled head. When the cover is turned down the shoulder snaps into locking engagement with the spring 126.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a machine of the class described, the combination of tack holding means provided with a plurality of tack pockets, a plu rality of drivers, a single raceway, means operating by movement in one direction to separate a plurality of loose tacks from the raceway, and additional means to deliver the separated tacks individually from the separating means to the tack pockets.

2. In a machine of the class described, the combination with a plurality of drivers, operating means therefor, and a single raceway, of tack separating means which separates tacks successively from the raceway, and means operated by the separating means subsequently to its separating action for delivering the separated tacks simultaneously.

3. In a machine of the class described, the combination of a plurality of drivers, a single raceway, means for supplying the raceway with tacks, a tack separator comprising a slide having a plurality of recesses,

means for reciprocating the separator slide across the raceway to fill the recesses with tacks, and means for delivering the tacks to the drivers from said recesses.

4. In a machine of the class described, the combination of a raceway, a separator adapted to separate successively a plurality of tacks from the raceway, an ejector adapted to eject tacks from the separator simultaneously, an actuator bar, and means for transmitting movement from the actuator bar first to the separator to separate the tacks and then to the ejector to eject the tacks.

5. In a machine of the class described, the combination with a plurality of drivers, of a raceway, a separator having a plurality of recesses adapted to register in turn with the mouth of the raceway, means for reciprocating the separator across the mouth of the raceway, tack receiving means having a plurality of tack throats, ejecting fingers adapted to pass through the recesses in the separator and engage the stems of the tacks and move into register with the walls of the tack throats, and an ejector plate arranged to engage the heads of the tacks to push them over the tack throats.

6. In a machine of the class described, the combination with a driver, of a raceway, tack receiving means having a tack throat, means arranged to transfer a tack from the raceway to a position adjacent to the tack throat, means adapted to engage the stem and head of the tack, and means for moving said stem engaging means to carry the stem into the tack throat and for subsequently moving the means which engages the head of the tack to push the head over the tack throat.

7. In a machine of the class described, the combination of a raceway, tack receiving means having a tack throat, means to engage the stem of the tack to carry the tack into the tack throat, and means for subsequently engaging the tack head to push the head over the tack throat.

8. In a machine of the class described, tack separating and delivering mechanism comprising a raceway; an actuator bar 78; a separator slide 90 arranged to reciprocate across the end of the raceway, having a resilient connection with the bar 7 8 and being provided with recesses 94, 96; and fingers 114 adapted to operate through the recesses to eject the tacks therefrom.

9. In a machine of the class described, tack separating and delivering mechanism comprising arraceway, an actuator bar 78, a separator slide arranged to reciprocate across the end of the raceway, a cam on the actuator bar, an ejector comprising a slide 108 actuated by said cam and having a plate 116 adapted to engage the head of a tack carried by the separator slide, and an ejecting finger 114 adapted to engage the stem of a tack and actuated from the slide 10. In a machine of the class described,

a cover plate, a spring 124:, a hinge pin 122 I longitudinally movable with the cover against said spring, and a member 126 adapted to prevent elevation of the plate in that longitudinal position of the pin 122 in which it is normally held by the spring 124.

11. In a machine of the class described, the combination of a single raceway, a separating mechanism including a tack separator adapted to pick oft tacks from said raceway, and means for jarring the raceway in definite time relation to the movements of the separator.

12. In a machine of the class described, the combination of a raceway, a separator adapted to take singly a plurality of tacks from the 'aceway, and means operated automatically for jarring the raceway when the sepa 'ator is in position to receive each tack.

13. In a machine of the class described, the combination with a raceway of a separator constructed and arranged for reciprocation across the end of the raceway and having therein recesses to receive in turn tacks from said raceway, operating mechanism for reciprocating the separator and causing it to dwell when a recess is opposite the raceway, and means operating in time relation to the movements of the separator to deliver a blow upon the raceway when each recess of the separator is opposite the straighten up the tack into alinement with the recesses 1n the reciprocating member when the opposite edge of said tack head is above the head of the following tack.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM C. STEIVART. WVitnesses CHESTER E. ROGERS, EVERETT WV. VARNEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

1 7 Washington, 13.0. 

